# UPSC > Mental Ability

Explore popular questions from Mental Ability for UPSC. This collection covers Mental Ability previous year UPSC questions hand picked by experienced teachers.

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Q 1.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline 6 & { 9 } & { 15 } \\ \hline 8 & { 12 } & { 20 } \\ \hline 4 & { 6 } & { ? } \\ \hline \end{array} {/tex}

A

5

10

C

15

D

21

##### Explanation

Q 2.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline 72 & { 24 } & { 6 } \\ \hline 96 & { 16 } & { 12 } \\ \hline 108 & { ? } & { 18 } \\ \hline \end{array} {/tex}

12

B

16

C

18

D

20

##### Explanation

Q 3.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline 2 & { 4 } & { 0 } \\ \hline 1 & { 2 } & { 4 } \\ \hline 3 & { 1 } & { 3 } \\ \hline 36 & { ? } & { 91 } \\ \hline \end{array} {/tex}

A

24

B

48

C

59

73

##### Explanation

Q 4.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline 4 & { 5 } & { 6 } \\ \hline 2 & { 3 } & { 7 } \\ \hline 1 & { 8 } & { 3 } \\ \hline 21 & { 98 } & { ? } \\ \hline \end{array} {/tex}

94

B

88

C

92

D

86

##### Explanation

Q 5.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline 6 & { 6 } & { 8 } \\ \hline 5 & { 7 } & { 5 } \\ \hline 4 & { 3 } & { 7 } \\ \hline 120 & { 126 } & { 320 } \\ \hline \end{array} {/tex}

A

4

8

C

12

D

16

##### Explanation

Q 6.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | c | } \hline 5 & { 9 } & { 8 } & { 7 } \\ \hline 8 & { 6 } & { 9 } & { 10 } \\ \hline 7 & { 13 } & { ? } & { 19 } \\ \hline 5 & { 7 } & { 8 } & { 9 } \\ \hline \end{array} {/tex}

A

9

B

10

C

12

15

##### Explanation

Q 7.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | c | } \hline 31 & { 17 } & { 58 } & { 87 } \\ \hline 68 & { 19 } & { 61 } & { 65 } \\ \hline 91 & { 22 } & { 70 } & { 50 } \\ \hline 10 & { 142 } & { 11 } & { ? } \\ \hline \end{array} {/tex}

A

5

B

8

7

D

4

##### Explanation

Q 8.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline 72 & { 24 } & { 6 } \\ \hline 96 & { 16 } & { 12 } \\ \hline 108 & { ? } & { 18 } \\ \hline \end{array} {/tex}

12

B

16

C

18

D

20

##### Explanation

Q 9.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline F & { W } & { O } \\ \hline A & { J } & { K } \\ \hline E & { M } & { ? } \\ \hline \end{array} {/tex}

A

N

B

X

D

D

P

##### Explanation

Q 10.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline 2 & { 72 } & { 56 } \\ \hline ? & { 0 } & { 42 } \\ \hline 12 & { 20 } & { 30 } \\ \hline \end{array} {/tex}

A

4

6

C

8

D

10

##### Explanation

Q 11.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline 4 & { 20 } & { 25 } \\ \hline 27 & { 81 } & { 9 } \\ \hline 11 & { 44 } & { ? } \\ \hline \end{array} {/tex}

A

4

16

C

30

D

55

##### Explanation

Q 12.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline - C & { 2 B } & { - 3 A } \\ \hline 2 A & { ? } & { - B } \\ \hline - 3 C & { - A } & { - 2 B } \\ \hline \end{array} {/tex}

A

-3C

B

-2C

3C

D

2B

##### Explanation

Q 13.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
r{tex} \begin{array} { | c | c | c | } \hline 3 \mathrm { C } & { 27 \mathrm { D } } & { 9 \mathrm { E } } \\ \hline 71 & { 21 \mathrm { K } } & { 3 \mathrm { M } } \\ \hline 4 \mathrm { D } & { ? } & { 7 \mathrm { J } } \\ \hline \end{array} {/tex}

A

HE

28G

C

35L

D

48F

##### Explanation

Q 14.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline 3 \mathrm { C } & { 2 \mathrm { B } } & { 4 \mathrm { A } } \\ \hline 27 \mathrm { A } & { ? } & { 64 \mathrm { B } } \\ \hline 9 \mathrm { B } & { 4 \mathrm { A } } & { 16 \mathrm { C } } \\ \hline \end{array} {/tex}

8C

B

12B

C

16C

D

18C

##### Explanation

Q 15.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline 188 & { 300 } & { 263 } \\ \hline 893 & { ? } & { 915 } \\ \hline \end{array} {/tex}

88

B

96

C

238

D

500

##### Explanation

Q 16.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer

A

68

78

C

74

D

69

##### Explanation

Q 17.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | c | c | } \hline 4 & { 226 } & { 1 } & { 37 } & { 2 } & { 135 } \\ \hline 6 & { 74 } & { 3 } & { 11 } & { ? } & { ? } \\ \hline \end{array} {/tex}

A

8,138

B

7,108

C

6,46

5,18

##### Explanation

Q 18.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer

A

127

142

C

158

D

198

##### Explanation

Q 19.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer

A

M

P

C

32

D

None of these

##### Explanation

Q 20.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer

A

15

B

16

C

17

18

##### Explanation

Q 21.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer

A

19

B

23

C

25

31

##### Explanation

Q 22.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer

A

24

B

25

26

D

27

##### Explanation

Q 23.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer

A

14

12

C

11

D

6

##### Explanation

Q 24.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer

M

B

N

C

Q

D

R

##### Explanation

Q 25.

Correct2

Incorrect-0.667

In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer

A

71

30

C

45

D

60